沟槽面在湍流减阻中的技术研究及应用进展

针对长输管道中存在的能源消耗问题，分别从湍流边界层流动特性、拟序结构、条带结构、转捩等方面归纳了沟槽面湍流减阻的国内外研究现状，讨论了沟槽的几何形状和尺度、流场压力梯度、沟槽面放置方式对沟槽减阻效能的影响。对沟槽面的减阻机理进行了综述，分析了存在的问题。指出需要利用先进的实验技术如PIV等图像处理手段,并结合计算流体力学软件对湍流边界层的瞬时流场进行研究，以找出沟槽面湍流减阻的机理。数值模拟了在平板中部横向布置的下凹沟槽的流场情况，得到了一种小涡流动结构，同时验证了这种结构在减阻中的作用，阐述了对减阻的另一种认识,并对沟槽面湍流减阻技术及其工业利用进行了展望。     

Playing With Time: Gay Intergenerational Performance Work and the Productive Possibilities of Queer Temporalities

This article examines the tendencies of LGBT intergenerational theater projects. By engaging with ideas of queer time, temporal drag, and the pervasive heteronormative imagery of heritability and inheritance, this article explores the possibility that LGBT intergenerational projects may generate some of the problems they aim to challenge. Through the lens of queer time, the article describes the normativity generated in LGBT intergenerational theater projects as a form of restrictive interpellation. The article explores the temporal complexities at play in such theater productions as The Front Room, a specific LGBT intergenerational theater project performed in the United Kingdom in 2011. The article concludes by noting some ways in which intergenerational theater projects might seek to work through the embodiment of the historical quotidian as a mode of resistance to normativity’s recirculation.     

The Association Between Gay Men's Stereotypic Beliefs About Drag Queens and Their Endorsement of Hypermasculinity

To date, few researchers have investigated gay men's stereotypic beliefs about drag queens and the association between these beliefs and individual difference variables such as hypermasculinity. To address this omission, 118 men self-identifying as non-heterosexual completed an online survey consisting of an adjective checklist about drag queens and a psychometrically sound indicant of hypermasculinity. As predicted, participants who were more likely to endorse hypermasculine belief statements tended to perceive negatively valenced attributes as more characteristic of drag queens. Possible explanations for this relationship, limitations associated with the current study, and directions for future research are delineated.     

变离心力场中等截面冷却通道的流量计算和实验研究

本文用数值计算得到的数据集，回归出在变离心力场下，等截面管流由于热阻力引起的变密度流流量减少公式，并用热平衡法在旋转试验台上测量了加热条件下通道内的加热量和平均流速．由实验数据集回归出的流量减少公式与数值计算结果相符．     

The Impact of Occupational Sex Segregation on Family Businesses: The Case of American Harness Racing

Previous research on occupational sex segregation agrees that the workplace is not an isolated world but instead influences, and is influenced by, other spheres of social life. Identifying specific social factors both internal and external to the workplace, and how these may interact, can provide deeper insights into how occupational sex segregation is created and maintained. This study focuses on individual family businesses in American harness horse racing, a previously unexamined and highly sex‐segregated industry, and provides insights in how vertical and horizontal sex segregation may develop in family businesses. The findings show how the belief that married couples cannot debate and resolve work‐related conflicts without undue strain on their personal relationship leads some of these couples to organize their work into gendered tasks and workspaces, contributing to the maintenance of vertical segregation in the trainer position. The implications for segregation of other solutions, such as operating separate businesses, or working for another business, are less clear.     

《电机与拖动》课实验教学改革的探讨

实验教学是培养21世纪综合性、应用性复合人才的有效途径。为了适应高等教育发展和社会的需求,我们选择了对《电机与拖动》的实验教学进行了尝试性的改革,提出了实验教学的“四个目标”,以突出培养学生创新意识和创造能力为重点,从教学内容、方式、管理制度上进行了实验教学改革的实践和探讨。     

法向表面力形式的热驱动力

本文对热驱动力的法向表面力形式及其在流动中起作用的条件作了分析,对这种热驱动流问题作了界定.利用热驱动力的概念对几种受热过程影响的流动作了定性的讨论.对热阻力及其与热驱动力的关系作了阐述.     

A new measure of risk-taking in gambling

This study uses a simple metric to assess the degree of risk an individual player takes on while gambling. The player’s average potential gross win per bet placed captures both the amount of money put at risk and the volatility of returns, each of which will be correlated with risk of gambling harm. To illustrate the potential usefulness of this metric, the study analyses individual account data relating to online bets on horse racing. Analysing total stakes, the traditional indicator of risk taking, and applying ordinary least squares regression, the greatest risk takers appear to be males in their mid-fifties. Using the new metric and applying quantile regression to allow a focus on heavier bettors, the highest risk takers are shown as substantially younger, males around 30. Choice of metric and estimation method therefore matter and the approach proposed here could be used by operators to identify which online players take greatest risks.     

能源对中国省份经济的增长阻力分析

本文在罗默（2001）的＂增长阻力＂分析框架的基础上,选取我国各省1986—2008年的能源与经济数据,分析了能源对我国各个省份的经济增长阻力。实证结果发现,能源对经济增长的阻力存在巨大的地区间差异性：东部沿海地区能源的增长阻力的平均值最大,西部地区次之,中部地区最小。     

“Still Raped Over Here”: Gay Male Femininity and the Rewards of Camp Ambivalence in Richard Day’s Girls Will Be Girls

ABSTRACT

Girls Will Be Girls (GWBG) delivers a substantive queer-feminist critique of heteronormative animus toward women and gay men through jokes that weaponize that animus for insurgent purposes. The film’s rape and abortion jokes showcase the provocative notion that negative representations of femininity might be wielded strategically and, in fact, more resonantly because they resist recuperation by marginalizing normative hierarchies. GBWG’s enactment of gay male femininity deploys queer dissidence by ameliorating pain through mockery while emphasizing the costs of heteronormative and patriarchal inflictions. This essay offers a test case for a queer feminist politics—one that, without discarding the imperatives for and rewards of more materially grounded political work, mines the critical as well as affective affordances of rage, mockery, and indignity against heteronormativity’s arbitrary but still formidable injunctions. A queer feminist reading of camp denaturalizes heteronormativity with a potency that queer theory and feminist theory might harness yet more effectually in less divided collaboration.